OWINGS MILLS, Md. — Needing to pare down their roster to 75 players by Monday’s 4 p.m. deadline, the Ravens have done so without waiving any more players.

As expected, linebacker Terrell Suggs (Achilles tendon) and wide receiver David Reed (knee) have been placed on the reserve physically unable to perform list. The designation allows the Ravens to remove each player from their active roster but sidelines them through the first six weeks of the regular season.

Suggs underwent surgery in early May for a partially-torn Achilles tendon suffered in late April. The third-year return specialist Reed suffered a torn ACL last December and is still working his way back to full strength.

After Week 6, Suggs and Reed have a three-week window to begin practicing. At any point during that time frame, the Ravens may activate either player. However, at the end of the period, the Ravens must activate them, waive them, or place them on season-ending injured reserve.

The Ravens hope the 2011 AP Defenisve Player of the Year will be able to return to action as he continues to rehab from surgery. Suggs has vowed he will return to the field this season, but the question of when that might happen remains a mystery.

Assuming Suggs would take the full three weeks, the Ravens would be forced to place him on the 53-man roster in the week leading up to their Nov. 11 game against the Oakland Raiders — even if he’s not ready to play by that point — or he would be placed on IR, ending his season.

The Ravens also announced they have played four players on injured reserve, ending their season. Defensive lineman Ryan McBean (broken ankle) and safety Emanuel Cook (broken lower leg) were already known to have been lost for the season, but linebackers Stevie Baggs and Darryl Blackstock were also placed on IR.

The organization could eventually come to an injury settlement for the two linebackers, which would allow them to catch on somewhere else if and when their injuries heal.

BALTIMORE — Have already lost defensive lineman Ryan McBean to a season-ending injury in the preseason opener, the Ravens can add Emanuel Cook to the list as the reserve safety suffered a broken right leg in Thursday’s 48-17 victory over the Jacksonville Jaguars.

The injury occurred early in the second half when Cook collided with teammate Anthony Allen on kickoff coverage. Cook’s lower right leg was immobilized before he was carted off the M&T Bank Stadium field. The 24-year-old posted on his Twitter account that he was undergoing surgery late Thursday night.

“One of my favorite guys broke his leg,” coach John Harbaugh said following the game. “He’s had a really good camp. He’s one of our most valuable special teams guys from last year. That was tough.”

Cook was the primary backup to free safety Ed Reed, and his loss likely increases the chances of both fourth-round pick Christian Thompson and rookie free agent Omar Brown making the 53-man roster.

The Ravens suffered another hit at safety as veteran Sean Considine suffered a concussion for the second week in a row. After last week was labeled as Considine being “dinged” in Harbaugh’s words, the one sustained against Jacksonville is a bigger concern.

“This one we’ll have to look at really hard,” Harbaugh said.

Linebacker Sergio Kindle did not play in Thursday’s game despite not being listed among the inactives prior to kickoff.